Bearing device for printing-couples.



H. A. W. WOOD. BEARING DEVICE FOR PRINTING COUPLES.

APPLICATION FILED JULY 2,19L3.

Patented Feb. 15,1916.

HENRY'A. WISE woon, or NEW YORK,.1\T.' Y., ASSIGNOR, BYJVIESNE'ASSIGNMENTS, To

woon NEWSPAPER MACHINERY CORPORATION,

I .TION OFpVIRGINIA.

To all whom it mar concern Be it known that I, HENRY A. Wren WooD,

a citizen of the-'United States, residing at New York, in the county ofNew York and State of New York, have invented a new and useful BearingDevice for Printing- Gon is a specifica ends-of themargin openings orgaps are provided two guide blocks 15 secured in po- .sition by screws16. Each of these guide ples, of which the following tion.

This invention relates to improvements in printing couples.

The principal objects thereof are to provide a simple and efficientmeans-for preventing the springing together of the. cylinders at themargin openings and the. oonsequent vibration of the cylinders and theleaving of impressions called friars, and to provide for adjusting thesame to the conditions of wear of the blankets.

Reference is to be had to the nying drawings in which V Figure 1 is apartial end elevation'of a printing couple provided with a preferredembodiment of this invention: Fig. 2 is a central sectional view of-thesame onthe line of Fig. 1: Fig. 3 is an end elevation of one of theadjustable sliding blocks: Fig.

accompa- 1 is a central sectional view of the same on the line 41 ofFlg. 3: Fig. 5 1s an end ele-- vation of one of the guide blocks; andFig. 6 is a side elevation of the adjusting plate.

At the high speeds at which printing machinery is now run in certainkinds of plants, it is found that the cylinders spring together at themargins when themarginal' openings of the two cylinders meet and thepressure is released. They have a tendency, therefore, to rebound fromthe leading edge of the on-coming plate. This causes the oncoming end ofthe second plate on the plate cylinder to strike the bolster of theblankets on the impression cylinder. The vibration causes two or threesharp black impressions to be left transverse to the printed sheet whilethe intervening space receives scarcely any impression. These blackimpressions are called friars. This invention is designed for obviatingthis dificulty.

Referring now to the drawings, it is to be seen that the invention isshown applied to an ordinary impression cylinder 10 and plate cylinder11. inder are provided two bearer rings 12. They are fastened to the twoends of the cylinder, being set into, the same, and are Specification ofLetters Patent.

On the impression cyl-,

BEARING nnvren FOR PRINTIN -obviates.

of a diameter" equal to-the outside diameter over the plates'on theother cylinder, preferably. These rings carry the blanket rods 13 andtheir locking mechanism, the latter not being shown, as any usualkindcan be employed. i

()n the plate 5 cylinder atpo'ints at the blocksis provided with a guideflange .17. Th s guideifiange extends along the two op,- posite stralghtsides ofthe guide block and is continuous around one end. Slidablymounted on this guide block is asliding block 18. This is provlded "witha flange 19 fit-. ting under the flange 17 throughout the length thereofso as to hold the block 18 firmly in position and yet-permit it to beadjusted radially. This sliding block is provided with an externalconvex surface 20 which is of a radius substantially the same as that ofthe bearer plate 12, and of the outside radius over'the plates on platecylinder. v plate cylinder gear (not shown). The rear end of this block18 is provided with a pair For the purpose of of beveled flanges 21.adjusting each of these blocks 18, the plate cylinder is provided with ashoulder plate 22 which engages in a neck 23 on an adjusting screw 24:arranged longitudinally. This 7 screw fits in a screw thread in aslidable adjusting block 24? mounted to move lon- 'g1tud1nally of thecylinder on a flat surface. This adjusting block is provided with twoslanting surfaces 25. These wedges engage the slantlng surfaces 21 ofthe block 18. It will be seen, therefore, that the blocks 18 can beadjusted radially to any desired degree of fineness by turning thescrews 24. For the purpose of holding'the the plates. However, as theblankets wear,

this diameter is reduced and this is compen- Patented-Feb. 15, 1916.

Application filed July 2, 1913; Serial No. 777,002.

It is, also on the pitch'line of the sated for by the adjustment of theblocks 18. In this way, any Variation in blanket cylinder .diameter canbe taken care of by moving the blocks 18 farther in so that they will bealways in contact with the bearer rings 12. In this way, when thecylinders turn so as to pass from one plate to another they aresupported or rather held apart by these blocks so that they cannotspring into the margin openings. It will be seen, therefore, that bythis arrangement the cylinders can be kept at all times in a conditionfor a high grade of printing and yet there is no danger of reducing theefliect of the impression by a continuous contact between the bearerrings throughout the revolution of the cylinders.

Although I have illustrated and described only a single embodiment ofthe invention, am aware of the fact that modifications can be madetherein by anyperson skilled in the art without departing from the scopeof the invention as expressed in the claims, therefore, I do not wish tobe limited in this respect, but

l Vhat I do claim is 1. In a printing couple, the combination of a plateand impression cylinder with a ring fastened to ,each end of one of saidcylinders, blanket rods carried by said rings, a bearing block mountedat each end of the other cylinder opposite the margin openings thereoffor engaging said ring and holding the cylinders apart, and means forradially adjusting said bearing block.

2. The combination with a printing cylinder, [of guide blocks thereon atthe ends of the margin openings, said guide blocks having guidesthereon, sliding blocks guided on said guides to move radially, saidsliding blocks having convex outer surfaces conforming substantiallywith the exterior diameter of the plate cylinder, and a longitudinalscrew mounted on said plate cylinder for adjusting said blocks radiallyalong the guides.

3. The combination with a printing cylinder, of a guide block thereon atthe end of the margin opening, said guide block being provided withsubstantially radial guiding surfaces, a sliding block mounted on saidguide block and guided thereby to move radially, a screw for holdingsaid guide block on the end of the cylinder, means for adjusting saidsliding block on the guide block, and a screw for fastening the slidingblock in adjusted positions.

4;. The combination with a printing cylinder, of a-guide block thereon,a sliding block guided on and carrying said guide block, a longitudinalscrew mounted on said plate cylinder, a wedge block engaging said screwand adapted to be adjusted thereby longitudinally, said sliding blockhaving a slanting surface engaging said wedge block, whereby the slidingblock is adjusted radially.

The combination with a printing cylinder, of guide blocks thereon at theends of the margin vopenings, said guide blocks having guides thereon,sliding blocks guided on said guides, said blocks having convex outerbearing surfaces, longitudinal screws mounted on said plate cylinder,wedge blocks engaging said screws and adapted to be adjusted thereby andwith said sliding blocks for adjusting them outwardly, and means forholding the sliding blocks in adjusted positions.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses."

HENRY A. W'ISE \VOOD. lVitnesses B. N. Sronenn, LI LrAN C. JONES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, 1). C.

